TY - JOUR

T1 - Monge strikes again : optimal placement of web proxies in the internet

AU - Woeginger, G.J.

PY - 2000

Y1 - 2000

N2 - In a recent paper (Proceedings of IFIP’98), Li et al. study the problem of placing m web proxies in the internet under a given traffic pattern. They consider the special case of a linear net topology with n nodes. Their goal is to minimize the overall latency of accessing the target web server subject to the network resources and traffic pattern. They show how this problem can be solved in O(n2m) time. In this short note, we observe that one of the underlying cost functions in this problem carries a Monge structure. By exploiting this structure and by applying some well-known results from the literature, we get a faster algorithm with time complexity O(nm).

AB - In a recent paper (Proceedings of IFIP’98), Li et al. study the problem of placing m web proxies in the internet under a given traffic pattern. They consider the special case of a linear net topology with n nodes. Their goal is to minimize the overall latency of accessing the target web server subject to the network resources and traffic pattern. They show how this problem can be solved in O(n2m) time. In this short note, we observe that one of the underlying cost functions in this problem carries a Monge structure. By exploiting this structure and by applying some well-known results from the literature, we get a faster algorithm with time complexity O(nm).

U2 - 10.1016/S0167-6377(00)00041-9

DO - 10.1016/S0167-6377(00)00041-9

M3 - Article

VL - 27

SP - 93

EP - 96

JO - Operations Research Letters

JF - Operations Research Letters

SN - 0167-6377

IS - 3

ER -